<template>
  <div class="mui-numbox"
       data-numbox-min='1'>
    <button class="mui-btn mui-btn-numbox-minus"
            type="button">-</button>
    <input id="test"
           class="mui-input-numbox"
           type="number"
           value="1"
           @change="countChanged"
           ref="numbox" />
    <button class="mui-btn mui-btn-numbox-plus"
            type="button">+</button>
  </div>
</template>
<script>
import mui from "../../lib/mui/js/mui.min.js";

export default {
  mounted() {
    mui(".mui-numbox").numbox();
  },
  methods: {
    countChanged() {
      this.$emit("getcount", parseInt(this.$refs.numbox.value));
    }
  },
  props: ["max"],
  watch: {
    // 属性监听
    max: function(newVal, oldVal) {
      // 使用 JS API 设置 numbox 的最大值
      mui(".mui-numbox")
        .numbox()
        .setOption("max", newVal);
    }
  }
};
</script>
<style lang="scss" scoped>
</style>
